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MERSEN FUSE 400V FA 0,125 A 5.20 MI5FA40V0,125
Mersen W093307 MI5FA40V0.125 high-speed semiconductor miniature fuse with a 0.125 A current rating, 400 V AC voltage rating, FA characteristic and 5 x 20 mm ceramic body.
£5.49
Why Choose the Mersen W093307 High-Speed Miniature Fuse?
The Mersen W093307, catalogue number MI5FA40V0.125, is a high-speed semiconductor miniature fuse designed to provide rapid overcurrent protection for sensitive semiconductor devices, power electronic equipment and industrial control systems. As part of Mersen's 5 × 20 mm FA 400 V miniature fuse range, it delivers exceptionally fast fault interruption to minimise fault energy and help protect valuable electronic components.
With a rated current of 0.125 A and a rated operating voltage of 400 V AC, the W093307 is ideal for instrumentation, converters, power supplies, automation systems and other semiconductor-based equipment operating on higher-voltage circuits. Its fast FA characteristic provides dependable protection against damaging overloads and short circuits.
The fuse features a robust 5 × 20 mm ceramic cartridge with ferrule terminals for clip mounting in compatible fuse holders. A 10 kA breaking capacity together with exceptionally low I²t values helps minimise thermal stress on protected components, improving equipment reliability and reducing downtime.
Key Advantages
- Designed for semiconductor and sensitive electronic circuit protection.
- 0.125 A rated current for precision electronic applications.
- 400 V AC rated voltage.
- Ultra-fast FA operating characteristic.
- Compact 5 × 20 mm ceramic cartridge.
- 10 kA breaking capacity for dependable fault interruption.
- Clip mounting enables quick installation and replacement.
- Very low I²t values help minimise damage to semiconductor devices.
- RoHS compliant construction.
Key Features
- Mersen 5 × 20 mm FA 400 V semiconductor fuse series.
- Catalogue number: MI5FA40V0.125.
- 0.125 A rated current.
- 400 V AC rated voltage.
- High-speed FA operating characteristic.
- Ceramic fuse body with ferrule terminals.
- Clip mounting installation.
- Pre-arcing I²t: 0.00077 A²s.
- Clearing I²t: 0.0045 A²s.
- Designed for semiconductor protection applications.
Reliable Protection for Semiconductor Equipment
The Mersen W093307 is specifically engineered for protecting semiconductor devices where extremely rapid fault clearance is essential. Its exceptionally low I²t performance limits the energy delivered during fault conditions, reducing the risk of damage to sensitive electronic components.
The ceramic construction, compact dimensions and high-voltage capability make this fuse well suited to industrial automation systems, instrumentation, power conversion equipment and other applications requiring dependable high-speed circuit protection.
Typical Applications
- Semiconductor protection.
- Industrial power electronics.
- Power converters and inverters.
- Variable speed drives.
- Automation and control systems.
- Instrumentation equipment.
- Electronic control panels.
- OEM machinery.
Technical Specifications
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| Current | 0.125 A | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 5x20 mm | |
| Manufacturer | Mersen | |
| Item number | W093307 | |
| Catalogue number | MI5FA40V0.125 | |
| Product type | High-speed semiconductor miniature fuse | |
| Series | 5 × 20 mm FA 400 V | |
| Rated current | 0.125 A | |
| Rated voltage | 400 V AC | |
| Current type | AC | |
| Characteristic | High speed (FA) | |
| Fuse size | 5 × 20 mm | |
| Mounting type | Clip mounting | |
| Terminal type | Ferrule | |
| Body material | Ceramic | |
| Breaking capacity | 10 kA | |
| Pre-arcing I²t | 0.00077 A²s | |
| Clearing I²t | 0.0045 A²s | |
| EAN | 3605340117370 | |
| Standard pack quantity | 50 pieces | |
| RoHS compliant | Yes |
Frequently Asked Questions
What is the Mersen W093307 used for?
The W093307 protects semiconductor devices and sensitive electronic equipment against overcurrent and short-circuit faults.
What is the current rating of the W093307?
This fuse has a rated current of 0.125 A.
What voltage is the fuse rated for?
The Mersen W093307 is rated for operation at up to 400 V AC.
What type of operating characteristic does it have?
The fuse features a high-speed FA characteristic for rapid semiconductor protection.
How is the fuse installed?
The W093307 is designed for clip mounting in compatible 5 × 20 mm fuse holders.
Trusted by Electrical and Automation Professionals
Mersen high-speed semiconductor fuses are trusted worldwide by machine builders, panel manufacturers and automation engineers for protecting sensitive power electronic equipment and semiconductor devices.
